Canola meal as a major protein source for sows

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Date
2018-12-20
Authors
Ettungalpadi Velayudhan, Deepak
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Abstract
The objectives of this research were to determine the effects of high inclusion of canola meal (CM) in gestation and lactation diets on lactation performance, milk composition, energy and nutrient digestibility, and gut health in sows and suckling piglet performance. Standardized ileal digestibility (SID) of CP and AA and standardized total tract digestibility (STTD) of P in CM fed to gestating and lactating sows with or without a multi-enzyme complex (MC) was also determined. In Study 1, results showed no differences in sow and litter performance when soybean meal was replaced with increasing levels of CM in lactation diets. However, energy and nutrient digestibilities were reduced with increasing dietary CM inclusion, probably due to increased fiber content. Results indicated that inclusion of up to 30% CM in lactation diet could support satisfactory sow and suckling piglet performance. Results from Study 2 indicated that up to 30% CM could be included in sow diets as a sole protein source from early gestation until weaning without affecting sow and suckling piglet performance, energy and nutrient digestibility, along with an increase in the abundance of beneficial bacteria in the gut. Furthermore, enzyme supplementation improved P digestibility post-farrowing in sows fed CM-containing diets. From Study 3, SID of indispensable AA in CM in gestating and lactating sows were, respectively: Arg, 89.2 and 91.3%; His, 93.1 and 94.0%; Ile, 85.9 and 87.0%; Leu, 89.2 and 89.2%; Lys, 87.0 and 87.7%; Met, 92.2 and 93.2%; Phe, 89.2 and 87.8%; Thr, 84.3 and 82.7%; Trp, 88.1 and 91.5%; Val, 85.9 and 84.3%. When compared to the average SID coefficients of AA in CM fed to growing pigs from previous studies, the SID coefficients for AA in lactating sows were higher in the present study. Supplementation with MC improved the SID of some AA during lactation. The average STTD for P in CM in sows was 44.7 % and MC significantly improved STTD of P in CM during lactation. Results imply that the use of nutrient digestibility values for CM in growing pigs would result in an underestimation of those for gestating and lactating sows.
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Keywords
Canola meal, Digestibility, Performance, Sows, Suckling piglets
Citation
Velayudhan D. E., and C. M. Nyachoti. 2017. Effect of increasing dietary canola meal inclusion in lactating sows on lactation performance, milk composition and nutrient digestibility of lactating sows. J. Anim. Sci. 95:1-7. doi:10.2527/jas2016.1191.
Velayudhan D. E., M. M. Hossain, A. Regassa and C. M. Nyachoti. 2018. Effect of high dietary canola meal inclusion in gestation and lactation sow diets with or without enzyme supplementation on reproductive performance, milk composition and nutrient digestibility. Anim. Feed Sci. Technol. 241:141-150. https://doi.org/10.1016/j.anifeedsci.2018.05.001.